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Throttle blipping on changedown with stock pedals

 
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macBdog  



Joined: 16 Aug 2004
Posts: 1111
Location: Brisbane, Australia

PostPosted: Tue Apr 19, 2005 9:58 am    Post subject: Throttle blipping on changedown with stock pedals Reply with quote

In preparation runs for my last two trackdays I attempted to blip the throttle when braking and changing gear (heel and toe) to match engine speed to gear speed. I have used this technique sucessfully before.

Either with the ball of my foot on the brake or the accelerator it was impossible to perform this manouvre smoothly because the accelerator is not in line with the brake. Whats the solution for those guys that race? Just brake early, let the clutch absorb the difference in engine speed and re-settle the car before cornering? I wish I could brake later than I am at the moment.
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edh  



Joined: 19 Nov 2003
Posts: 240
Location: Derby, UK

PostPosted: Tue Apr 19, 2005 6:05 pm    Post subject: Reply with quote

I found the exact opposite

My 924S is the first car I've had where I've been able to get some heel/toe working. A bit easier on the road where engine speeds are lower & everything happens slower, but still reasonably easy on the track.

I thought the long accelerator pedal helped - I use the toes/ball of foot on brake, heel/side of heel on throttle.
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924RACR  



Joined: 29 Jul 2001
Posts: 8334
Location: Royal Oak, MI, USA

PostPosted: Tue Apr 19, 2005 10:28 pm    Post subject: Reply with quote

Yeah, I do it side-to-side. I have a non-stock accel pedal in the racecar, but stock in the turbo, and no problem heel-n-toeing in either.

What exactly is the nature of your difficulty? Is it the height of the pedals, or the gap between the two? Obviously if it's the gap the easy solution is aftermarket pedals; if it's the height then some adjustment may need to be made.
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Vaughan Scott
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macBdog  



Joined: 16 Aug 2004
Posts: 1111
Location: Brisbane, Australia

PostPosted: Tue Apr 19, 2005 11:42 pm    Post subject: Reply with quote

No the height is great, when I have the brake say 80% to burried, there is still a gap between the brake and the accelerator distance wise. That is, the accel is further away from me than the brake. Maybe ill try to move my foot up to the top of the brake pedal where the accel will be closer...
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1979 931 with a 350 chev
1973 911E with EFI
p-talk wrote:
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John Brown  



Joined: 07 Nov 2002
Posts: 903
Location: Leesburg VA

PostPosted: Thu Apr 21, 2005 12:46 pm    Post subject: Reply with quote

I do the same as Vaughan. As an aside, hard to be sure, your description sounds as though the accelerator pedal may be low.
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80 931 - #931 44Cup
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john h  



Joined: 06 Nov 2002
Posts: 827
Location: Wellington New Zealand

PostPosted: Thu Apr 21, 2005 3:29 pm    Post subject: Reply with quote

I'd have to go with John Brown and Vaughan - I find the pedals are exactly where I want them for heel and toe operation. I don't actyually think about it but it seems to work. I'll try to remember next tiem I'm out as to what I do

have you got stock pedals? If the accelerator pedal has been replaced at some time in the past and not hinged from the floor this could be causing your problem
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macBdog  



Joined: 16 Aug 2004
Posts: 1111
Location: Brisbane, Australia

PostPosted: Thu Apr 21, 2005 3:57 pm    Post subject: Reply with quote

No its hinged from the floor, I'm gonna do some practice tonight and find out whats wrong with my technique. I think maybe im just used to the arrangement on my old car where the three pedals were all at the same distance away from the seat.
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1979 931 with a 350 chev
1973 911E with EFI
p-talk wrote:
I'm still convinced the word 'Porsche' makes people crazy in all kinds of ways
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macBdog  



Joined: 16 Aug 2004
Posts: 1111
Location: Brisbane, Australia

PostPosted: Wed Apr 27, 2005 9:06 am    Post subject: Reply with quote

Ok Ive got it going on now. I didn't realise youd have to float your heel so high up onto the brake pedal.
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1979 931 with a 350 chev
1973 911E with EFI
p-talk wrote:
I'm still convinced the word 'Porsche' makes people crazy in all kinds of ways
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